diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6c21e4d2d811c0efdbc006937aca8eace75db47c..2cb5617d758f14b619675a3ef4414420945db993 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,15 +27,11 @@ build-my-base:
       --cache-from "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:latest"
       --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:$CI_COMMIT_SHA"
       --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:latest"
-      --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/base:latest"
-      --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/base.5.5:latest"
       --file Dockerfile
       --target ${STAGE_NAME}
       ./
     - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:$CI_COMMIT_SHA"
     - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:latest"
-    - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/base:latest"
-    - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/base.5.5:latest"
 
 
 
@@ -46,25 +42,25 @@ build-my-rbase:
     STAGE_NAME: "my-rbase"
   script:
     - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
-    - if [ "$R_VERSION" == "latest" ]; then export R_VERSION_PATH_TAG="v-latest"; else export R_VERSION_PATH_TAG=$R_VERSION; fi
     # pull the previous stage
-    - docker pull "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/my-base:latest"
+    - docker pull "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/my-base:$CI_COMMIT_SHA"
     # pull the latest build of the target R version in order to re-use it
-    - docker pull "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG:$R_VERSION" || true
+    - docker pull "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}-${R_VERSION}:latest" || true
     # pull the latest build of the target R version in order to re-use it
     - docker pull "$CI_REGISTRY_IMAGE:$R_VERSION" || true
     # building
     - docker build
-      --cache-from "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/my-base:latest"
-      --cache-from "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG:$R_VERSION"
+      --cache-from "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/my-base:$CI_COMMIT_SHA"
+      --cache-from "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}-${R_VERSION}:latest"
       --cache-from "$CI_REGISTRY_IMAGE:$R_VERSION"
       --build-arg R_VERSION
-      --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/${R_VERSION_PATH_TAG}:$CI_COMMIT_SHA"
+      --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}-${R_VERSION}:$CI_COMMIT_SHA"
+      --tag "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}-${R_VERSION}:latest"
       --file Dockerfile
       --target ${STAGE_NAME}
       ./
     # push image tagged with its versions
-    - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}/${R_VERSION_PATH_TAG}:$CI_COMMIT_SHA"
+    - docker push "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/${STAGE_NAME}:${R_VERSION}"
   parallel:
     matrix:
       - R_VERSION: ["3.6.3", "4.2.3", "latest"]